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Avoid excessive heap memory reallocation when generating EMF

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metarecords in memory.
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Dave Belanger 2003-10-08 22:33:35 +00:00 committed by Alexandre Julliard
parent c93c27f420
commit a7bbf47f1b
1 changed files with 10 additions and 6 deletions
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16
dlls/gdi/enhmfdrv/init.c
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@ -185,12 +185,16 @@ BOOL EMFDRV_WriteRecord( PHYSDEV dev, EMR *emr )
if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL)) if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL))
return FALSE; return FALSE;
} else { } else {
len = physDev->emh->nBytes; DWORD nEmfSize = HeapSize(GetProcessHeap(), 0, physDev->emh);
emh = HeapReAlloc( GetProcessHeap(), 0, physDev->emh, len ); len = physDev->emh->nBytes;
if (!emh) return FALSE; if (len > nEmfSize) {
physDev->emh = emh; nEmfSize += (nEmfSize / 2) + emr->nSize;
memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr, emh = HeapReAlloc(GetProcessHeap(), 0, physDev->emh, nEmfSize);
emr->nSize); if (!emh) return FALSE;
physDev->emh = emh;
}
memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr,
emr->nSize);
} }
return TRUE; return TRUE;
} }